Today, the ivy-covered walls of an abandoned Royal Irish Constabulary barracks mark the probable site, measuring 42 metres east to west and 36 metres north to south. These 19th-century walls were built atop Fort Falkland, a 17th-century plantation fortification constructed in 1624 by Sir Arthur Blundell, which itself may have incorporated remnants of earlier structures; a 16th-century O’Carroll castle and possibly even a 13th-century Anglo-Norman fortress built by Richard Tuite.

The site’s turbulent history reflects the broader struggles for control of this strategic Shannon crossing. The O’Carrolls rebuilt their castle here in 1544, only to demolish it four years later along with other Ely and Delvin fortifications, fearing English seizure. When the plantation of Delvin MacCoghlan began in the 1620s, Fort Falkland became the cornerstone of a new planned town, complete with church, burgage plots, and Sir Arthur Blundell’s own house nearby. Archaeological investigations in 1997 uncovered limestone walls beneath the Constabulary Barracks that may belong to the 17th-century fort, whilst a substantial ditch discovered near Main Street could be part of the town’s original earthwork defences, which according to a 1629 map protected three sides of the settlement with a projecting bulwark to the northeast.

By 1690, Banagher had gained its first bridge across the Shannon, though the current structure dates from the 1840s. The town continued to develop through the centuries, with a 19th-century gun battery positioned on the river’s northern bank and various mill complexes taking advantage of the waterpower. Despite extensive underwater archaeological surveys of the riverbed near these historic sites, no significant finds have emerged from the Shannon’s depths, though remnants of an earlier bridge structure, visible on 18th-century maps, still lie just downstream of the modern crossing.